THAT IS COMING UP NEXT WEEK. >> CAN'T WAIT FOR THAT. ALL RIGHT, NOW TO OUR "GMA" COVER STORY. WE HAVE THE LATEST ON THE ROYALS AND THE NEW SEASON OF THE HIT SHOW, "THE CROWN." FUTURE JOURNALISTS KNOW THE ROYAL FAMILY BETTER THAN ANDREW MORTON AUTHOR OF "DIANA: HER TRUE STORY." HIS RELATIONSHIP WITH HER IS DEPICTED IN THE SHOW AND HIS NEW BOOK IS "THE QUEEN" AND HE'S TALKING ABOUT IT THIS MORNING. MAGGIE RULLI HAS MORE FROM BUCKINGHAM PALACE. GOOD MORNING. >> Reporter: GOOD MORNING. YEAH, ANDREW MORTON HAS THAT BRAND-NEW BOOK ABOUT THE QUEEN'S LIFE COMING OUT, BUT HE'S ALSO BEEN A ROYAL INSIDER FOR DECADES AND WITH "THE CROWN'S" NEW SEASON DIVING INTO THE '90s. EVERYONE WANTS TO GET HIS TAKE ON THE SHOW AND FIND OUT MORE ABOUT WHAT REALLY HAPPENED DURING HIS FAMOUS COLLABORATION WITH PRINCESS DIANA. >> READY? >> I'M INCREDIBLY NERVOUS. >> Reporter: THIS MORNING, ROYAL INSIDER ANDREW MORTON OPENING UP ABOUT THE NEW SEASON OF NETFLIX'S "THE CROWN." >> ANDREW WANTED YOU TO START BY EXPLAINING WHY YOU'RE DOING THIS. >> BECAUSE I'VE TRIED EVERYTHING. >> Reporter: MORTON WAS ASKED TO CONSULT ON THE EPISODE FEATURING HIS ASTONISHING PARTNERSHIP WITH PRINCESS DIANA AND THEIR COLLABORATION BEHIND THE TELL ALL BOOK "DIANA: HER TRUE STORY". >> SCRIPT WRITERS ASKED WHAT WAS THE COLOR OF THE WALLPAPER IN MY DAUGHTER'S BEDROOM BECAUSE THAT'S WHERE I HAD AN OFFICE FOR A TIME. >> Reporter: THE SEASON FOCUSING ON THE SO-CALLED WAR OF THE WALES DURING THE '90s. >> PRINCE CHARLES FAMOUSLY REPLIED WHATEVER IN LOVE MEANS AND ASKED IF HE WAS IN LOVE WITH YOU. HOW DID THAT MAKE YOU FEEL? >> ABSOLUTELY TRAUMATIZED. >> Reporter: "THE CROWN" CRITICIZED FOR ITS FICTIONAL TAKE ON THE LIVES OF THE ROYAL FAMILY WITH CALLS FOR DISCLAIMERS TO BE ADDED MAKING IT CLEAR THAT IT'S FICTION, NOT FACT. MORTON SAYS HE WAS STUNNED BY THE ACCURACY OF ELIZABETH DEBICKI'S PORTRAYAL OF DIANA. >> IT LEFT ME BREATHLESS. AND IT TOOK ME BACK ALL THOSE YEARS. I MEAN, I DON'T SAY THIS VERY OFTEN BUT I WAS SHAKEN. >> LISTENED TO THE TAPES? >> HE HAS AND HAVE SOME FOLLOW-UP QUESTION. >> WHAT DID HE THINK? >> I THINK HE WAS A BIT SHOCKED. >> WHAT I DIDN'T REALIZE AT THE TIME WAS HER SENSE OF ISOLATION, HER SENSE OF DESPAIR INSIDE THE ROYAL SYSTEM. >> Reporter: AS THE SERIES DETAILS THE REACTION TO HIS FIRST BEST-SELLER MORTON HAS WRITTEN ABOUT THE ROYAL FAMILY FOR DECADES AND NOW IN HIS NEW BOOK HE'S EXPLORING THE INFLUENCE OF QUEEN ELIZABETH II. >> WHAT IMPRESSED ME MOST ABOUT HER MAJESTY THE QUEEN SHE IS A LIVING EMBLEM OF KEEP CALM AND CARRY ON. >> Reporter: THE QUEEN, HER LIFE, PAINTING AN INTIMATE PORTRAIT OF THE WOMAN BELOVED FOR HER 70 YEARS ON THE THRONE. >> I THINK THE BOOK IS A COMPLETE PICTURE OF HER MAJESTY. SHE WAS ONLY 25 WHEN SHE CAME TO THE THRONE AND SHE BECAME THE CEO OF GREAT BRITAIN INC. AND IT WAS A TREMENDOUS TSUNAMI OF RESPONSIBILITY THAT THREATENED TO OVERWHELM HER AND THE BOOK CHARTS THAT EXPLORATION. >> Reporter: AND FOR THE LEGACY SHE LEFT BEHIND. >> I HOPE THAT READERS COME AWAY WITH THE HUMAN BEING, SHE'S A WOMAN, A GRANDMOTHER, A GREAT GRANDMOTHER. SHE HAS A COMPELLING STORY AND HERZLICH HAS BEEN A COMPELLING JOURNEY AND WE'RE ALL SAD THAT SHE'S GONE. >> Reporter: ANDREW SAYS LEARNING MORE ABOUT THE QUEEN'S JOURNEY FROM A SHY 25-YEAR-OLD TRANSFORMING INTO A POWERFUL MONARCH WAS ABSOLUTELY FASCINATING. NOW HIS NEW BOOK IS OUT NEX